exam Maths Puzzle Numerical Ability

3x-5>and4x+3<15
x+1_<-1orx>63x+1>-8or5x+2<22
x+4<5
3x+2>5

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exam Other Question

If x is the sum of all prime factors of 38, and if y is the sum of all prime factors of 84, what is the value of x-y? Please explain prime factors. find Z; 4 1/2z=6